this video from the same instructional series also supports the fact that this was originally a sword technique http://www.youtube.com/watch?v=CkCidyf0jWs
Does this mean it is not normally taught within the Aikido syllabus? I just assumed this was a standard Aikido technique from these youtube videos.
It is a "standard" technique in Aikido - but not all variations are being taught in every dojo or by every teacher. I think most aikidoka are for example familiar with uke nagashi against yokomen uchi.